Seiko D138 Movement Details
Seiko calibre D138 is a digital watch movement. Production was in the 1980s.
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| Sub-brands: | Silverwave, Sports 100 |
| Battery: | SR1120W / 391 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| GMT / world time? | No |
| Chronograph? | Yes |
| Rate: | 32,768 Hz |
| Size / diameter: | 28.5mm x 27.0mm |
| Height: | 5.9mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Has an alarm. |